Portable power-shovel.



H. C. BECKWITH.

PORTABLE POWER SHOVEL.

APPLICATIONHLED MAR. 3|, 19161 Patonted Feb. 5, 1918.

2 SHEETS-SHEET I.

/ GENE )fc5 H. c. BEcKwnH.

PORTABLE POWER SHOVEL.y

APPLICATION man HAR. al. 191s.

Patented Feb. 5, 1918i.

2 SHEETS-SHEET 2- if if HENRY C. BECKWITH, F RAVENNA, OHIO, ASSIGNOR TO THE JOHN F. BYERS MACHINE COMPANY, OF RAVENNA, OHIO, A CORPORATION OF OHIO.

PORTABLE rovvnn-sHovnL.`

Specification of Letters Patent.

Patented 1hab. 5, 191e.

Application led March 31, `1916. Serial No. 87,919.

To all Lei/wm, I5 'may concern.'

Be it known that l, Henny (l. BEUmvrrH, a citizen of the United States, and a resident of Ravenna, county of Portage, andA State of Uhio, have invented a new and useful Improvement Vin Portable Power-Shovels, of which the following is a specification, the principle of the invention being herein explained and the best mode in Which l have' conten'iplated applying that principle, so as to distinguish it froin other inventions.

rlhe subject of the present invention is a portable power shovel designed to be used in loading' and unloading operations, and consisting of an engine mounted upon a suitable fran'ieivork which also vcarries a swinging boom and a blicke The particular features of the construction which form the present invention are the framework or platfori'n upon which are mounted the various elements of the machine and also the specific means for swinging the boom. To the accomplishment of the foregoing and lated ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claim.

rllhe annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such dis closed means constitntinQ'-, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings :M

Figure 1 is a side elevation of my improved machine; is a plan view of the same; and Fig. 3 is a plan view on an enlarged scale of the means for driving the traction Wheels.

The machine comprises a frame constructed of two longitudinally extending members 1 forming side members, between which there are mounted intermediate members 2 Which are on a level with the members 1 and are parallel therewith. At suitable intervals transverse members 3 are provided for connecting the side and intermediate members 1 and 2, and in this Way a rigid frame- Work is constructed. The form of the side members 1 is better shown in Fig. 1, from Which it Will be seen that at one end they are cut away as at 4 in order to provide swinging space for the Wheels 5 which are operated by means of the steering connections 6 and steering column 7. Across one end of the members 1 and 2 there is mounted a plate 8 provided with a central aperture and adapted to receive thereon, over such aperture, a boiler E), the ash-pit 10 for such boiler being disposed beneath the aperture in the plate and being supported upon the intermediate members 2. .lust forward of the boiler, upon the plate 8, there is mounted a vertical reciprocating engine 11 operated by steam from such boiler, and forward 'of this engine are mounted the winding drums 13 and 14, which are driven by the gears 15 and 16 respectively which are interengaging and are driven from a gear 17 on a shaft 13 which also carries a gear 19 operated from a gear on the crank shaft of the engine. Friction clutches 20 and 21 controlled by the levers 22 and 23 respectively are provided for engaging or disengaging either or both of these two drums 13 and 14.

The operation and general construction of a portable power sho-vel is so Well known that it need not be described in detail, it being sufficient to say that the present machine is provided with the usual cables and operating means therefor to effect the operations usually performed by such a machine.

rlhe drive for the traction Wheels 25 and 2G is by means of a chain 27 from a sprocket mounted on the shaft which carries the gear 20, this chain driving a shaft 28 which carries gears 29 and 30 meshing with gears 31 and 32 which operate `winding drums 33 and 34 placed in alinement and carrying thereover a cable 35 Which goes over a sheave 36 attached to the swinging boom. The sheaves 33 and 34 may be operated independently, and friction clutches 37 and 38 are provided for engaging either ofthese sheaves or drumswith their driving gears 31 and 32. Mounted beneath the drums 33 and 34 are tvvo sheaves 39 over which the cable 35 passes as it leaves these drums, thus permitting the use of a continuous cable for operating a swinging boom, a feature of some importance and advantage in a machine of this type.

The shaft 23, which drives the traction Wheels, and the short shafts Which bear the gears 31 and 32, are both provided with disks 40 which are keyed to the shaft, and which carry pavvls Which on the shaft 28 are inclined in one direction, and on the shafts bearing the gears 31 and 32, in the opposite direction. These paWls normally engage ratchet Wheels 42, which are attached to the sprockets 43 and 53, over Which-run chains 44,7Which are operatively connected to the driving Wheels 25 and 26. rihe engine is a non-reversing engine and Will ordinarly drive the machine in the forward direction through the pawls 41 Which eng 3;age With the ratchets on the shaft 28.

During this drive the ratchets and the sprockets on the shafts `which carry the gears 31 and 32 will beinoperative, and a certain'diterential action Will be permitted between the tWo traction Wheels 25k and 26, since .either may overrun the other by reason of the pavvl and ratchet driving engagement. During this f operation the pawls mounted on the shafts which carry the gears 31 Vand 32 are held out of engagement by being supported on pins 4G, provided for that purpose,`but if it is desired to drive in the opposite direction,these ratchets Will be allowed to come into play, andthe ratchetsl on'the shaft 28 Will be held out of engagement.V VThe same operation Vvvill then take place, except thatthe traction wheels Will ybe driven in the opposite direction.

Itl Will be noticed that the drumsl and 14 are mounted directly upon the intermediate frame members 2, and no separate base is provided for these drums, nor is any separate base provided for the boiler, all of the operating elements of the machine being supported directly upon the frame, and the frame being in turn constructed to properly receive these various elements. In this way provided the means stated by any of the following claims or the equivalent of such stated means be employed.

l therefore particularly point out and distinctly claim as my invention A frame for a portable power bucket comprising spaced side members, intermediate members parallel and alined therewith, transverse members connecting said side and intermediate members and alined therewith, a plate supported upon said transverse, side and intermediate members and being provided with an opening located centrally therein, a boiler supported upon said plate over such opening, and an ash pan for said boiler supported below such opening in said plate on said intermediate members.

Signed by me, this 30 day of March, 1916.

HENRY C. BECKWITH. Attested by- H. B. FAY, D. T. Davies.

`Copies of this patent may be obtainedifor five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

